Anchor.



mms.

(No Model.)

MEM

Patented Oct. 7, |902;

J. P. S. LAWRANCE.

ANCHOR.

(Application led Nov. 4, 1901.)

UNTTne STATES PATENT Ormes.

JAMES I). S. LAVRANOE, OF THE UNITED S"ATES NAVY, ASSIGNOR OF ONE- HALF TO THOMAS BURD ZELL,

OF CHESTER, PENNSYLVANIA.

ANCHOR.

SPECIFICATON forming part 0f Letters Patent NO. 710,918, dated October 7, 1902.

Application filed November 4,1901. Serial No. 81,053. (No model.)

To al?, whom t may concern:

Be it known thatl, JAMES P. S, LAWRANCE, a lieutenant-commander in the United States Navy, at present stationed at Thu rlow, in the city of Chester, State of Pennsylvania, have invented certain Improvements in Anchors, of which the following is a specification.

My invention relates to the well-known style of anchors having the linkes arranged to oscillate with respect lo the shank, such oscillation being in extent about one-quarter of a revolution, more or less, and limited by any suitable coacting means carried by the shank and the hubs of the fluke.

A further feature of my invention consists in reducing the number of parts necessary to form a finished anchor, and for this purpose one or more of the members may be cast together, a further feature of my invention being to provide means for retaining the flukes in connection with the other members of the anchor.

In the accompanying drawings, Figure l is a plan view of an anchor, illustrating the preferred form of my invention, the hubs of the flukes being shown in section. Fig. 2 is a sectional view taken on the line b b, Fig. l; and Fig. f3 is a plan view of a portion of the anchor, illustrating a detail of my invention.

In the form of anchor as constructed by me and shown in Figs. l and 2 of the accompanying drawings I provide a shank l, having an enlarged head 2, from the center of which,on opposite sides of the same,the shafts or spindles l project, carrying the ukes 5b. The iiukes 5b are carried by hubs 7, which are provided with the usual fins S, and enlarged heads 9 and l0 are formed at the ends of these hubs, the portion between said hubs being reduced in diameter between such heads, as shown, and strengthened by means of the ribs ll. The dukes are cast as separate and distinct members and have their heads recessed at 16. Each fluke has a through-opening, whereby it may be slipped over the Vshaft or spindle 6b, the inner portion of said opening having a space 25 with radial walls 2G, which coact with ribs 27, carried by the shafts or spindles (ih, and thereby serve to limit the movement of the flukes upon the hub. For the purpose of securing the flukes to the ends of the shafts or spindles I may shrink a collar 18 on the end of the same after the fluke has been slipped into place, such collar fitting the recess l in the head of the fluke and being of such thickness that a flush finished surface may be provided for both collar and head. Each of the ukes b is independently mounted upon the shaft or spindle 6, and consequently the collars 1S should tit so as to permit this free and independent movement.

In my improved form of anchor the head 'of the shank is rounded, as shown, and while it is of greater diameter than the hubs of the dukes it is of less diameter than the full Width of the tins, and hence will not interfere with such fins when the anchor is in use. The connection between the shafts or spindles and the enlarged head of the shank is rounded, as shown, and in casting a fillet is bypreference inserted at this point, so that the connection will be greatly strengthened and prevent a fracture.

For the purpose of having an anchorof the character illustrated in Figs. l and 2, and yet at the same time one Whose tlukes will be coupled together, so that their movement is simultaneous, I may provide the heads 9 with the extension-pieces 30, having interlocking portions or ngers 3l,so that when set together they will be locked against independent movement. These portions are suitably eX- tended, so'as to come over the rounded end 2 ofthe shank, and by providing each piece with a projection and a recess there is no necessity of having rights and lefts.

My improved anchor is of simple construction7 of few parts, and the connections providing for the movement of one part upon another are of such character and proportioned with relation to the othermembers that an exceptionally strong anchor is procured.

Having thus described my invention, I claim and desire to secure by Letters Iatentl. The combination in an anchor, of the shank, a pair of dukes, a shaft or spindle formed integral with the shank and supporting the flukes, said ilukes having hubs extending from the shank to the ends of the shafts and being permitted to oscillate with IOD respect to the shank, means carried by said linkes and coacting with the shaft or spindle for limiting the movement of the iukes, and means for securing said iukes to the shafts or spindles, said iiukes having recessed portions for the reception of the securing means.

2. The combination in an anchor, of the shank, a pair of iiukes, a shaft or spindle formed integral with the shank and carrying said flukes and so combined with said shank as to dispose the flukes on opposite sides of the same, said flukes having heavy hubs eX- tending from the shank to the end of the shaft and being independently mounted and free to oscillare with respect to the shank, means for securing said flukes to the shafts or spindles com prsing collars to be shrunk onto the ends of the shaft or spindle, said dukes being recessed to receive said collars, and coacting means carried by said dukes entirely independent of the shaft or spindle and serving to connect the same whereby their oscillation will be simultaneous.

3. The combination in an anchor, of ashank having an enlarged head, and shaftsor spindles cast integral therewith, lugs carried by each shaft or spindle, independently-mmm ted flukes adapted to said shaft or spindle and having hubs extending from the shank to the end of the shaft or spindle, means for limiting the oscillation of the flukes, such means comprising internal recesses in said lukes with radial walls to engage the lugs of the shaft or spindle, and collars shrunk onto each end of the shaft or spindle for securing the iinkes in place, the hubs of said flukes being recessed to receive said collars.

4. The combination in an anchor, ofashank having an enlarged head and having a shaft or spindle cast integral therewith, lugs carried by said shafts or spindles, separate iiukes adapted to said shafts or spindles ,and having recesses provided with radial walls coacting with said lugs to limit the oscillation of the iinkes, said linkes having hubs extending from the shank to the end of the shaft whereby a long bearing is secured, and means for securing the flukes and shafts or spindles in proper relation to each other, said means comprising a collar shrunk onto the ends of the shafts or spindles, the hubs of said flnkes being recessed for the reception of said collar.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

J. P. S. LAVRANCE.

Vitnesses:

MURRAY C. BOYER, J os. H. KLEIN. 

